The Letters of Bishop Dalamaid are relevant to this discussion, I feel.
"The letters of Bishop Dalamaid have been the subject of volumes of intellectual discourse. The primary contention of the letters, that true saintly martyrdom is an impossibility for anyone even aware of the concept of sainthood, has gone through various levels of favor over the generations. "
They are the writings of a Bishop, but they are Not Scripture, and the popularity of the ideas in them varies over time.
So, we can use the Letters, to observe a few things.
1. The Scriptures do not contain anything relating to saintly martyrdom, and there is much argument and discussion by various clerics about the issue.
2. Since the Letters are Not Scripture, then the Theology Council has not come to a decision about the issue.
3. If the Theology Council comes to a decision, making the Letters either Scripture or Heresy, then, it shows that the Theology Council's role is to determine what is and what is not Scripture.
4. Thus, as long as a religious group bases their beliefs from the Council approved Scripture, then they can have substantially different interpretations, giving rise to a great diversity of beliefs within the wider Amarr Church.